Nissan Altima HL32 Hybrid. Manual - part 153

 

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Nissan Altima HL32 Hybrid. Manual - part 153

 

 

BRAKE WARNING LAMP REMAINS ON

BRC-177

< SYMPTOM DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

BRAKE WARNING LAMP REMAINS ON

Description

INFOID:0000000004212750

The brake ECU is connected to the combination meter with CAN communication via HV ECU. If any of the fol-

lowing is detected, the brake warning lamp remains on:

• The brake ECU connector is disconnected from the brake ECU.

• The brake fluid level is insufficient.

• The parking brake is applied.

• EBD operation is not possible.

• There is a malfunction in the brake ECU or HV ECU.

• There is an open in the harness between the combination meter, HV ECU and brake ECU.

Diagnosis Procedure

INFOID:0000000004212751

CAUTION:

When replacing the brake ECU, perform initialization of linear solenoid valve and calibration.

1.

CHECK DTC

Check if the ABS, VDC and/or Electronically Controlled Brake DTC is output.

Result

A

>> GO TO 2.

B

>> Repair circuit indicated by output DTC.

2.

CHECK CAN COMMUNICATION SYSTEM

Check if the CAN communication system DTC is output.

Result

A

>> GO TO 3.

B

>> Inspect CAN communication system.

3.

INSPECT HV ECU

Perform HV ECU self-diagnosis.
Is the inspection result normal?

YES

>> Repair or replace malfunctioning components.

NO

>> GO TO 4.

4.

CHECK IF BRAKE ECU CONNECTOR IS SECURELY CONNECTED

Check if the brake ECU connector is securely connected.

NOTE:

The connector should be securely connected.
Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Connect connector to ECU correctly.

5.

CHECK AUXILIARY BATTERY

Check the auxiliary battery voltage.

Condition

Proceed to

DTC is not output.

A

DTC is output.

B

Condition

Proceed to

DTC is not output.

A

DTC is output.

B

Standard voltage : 11 to 14 V

BRC-178

< SYMPTOM DIAGNOSIS >

[VDC/TCS/ABS]

BRAKE WARNING LAMP REMAINS ON

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Charge or replace auxiliary battery.

6.

INSPECT BRAKE ECU (IG1 TERMINAL)

1. Disconnect the brake ECU connector.

2. Turn the ignition switch ON.

3. Measure the voltage according to the value(s) in the table below.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness or connector (IG1 circuit).

7.

INSPECT BRAKE ECU (GND TERMINAL)

1. Turn the ignition switch OFF.

2. Disconnect the brake ECU connectors.

3. Measure the resistance according to the value(s) in the table

below.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace harness or connector (GND circuit).

8.

READ VALUE OF CONSULT-III (PARKING BRAKE SWITCH)

1. Reconnect the brake ECU connectors.

2. Connect the CONSULT-III.

3. Turn the ignition switch ON.

4. Select the “DATA MONITOR” on the CONSULT-III.

ABS/VDC:

5. Using the CONSULT-III, check the input of switch operation when the parking brake pedal is operated.

NOTE:

When the parking brake is operated, the display changes as shown above.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 11.

9.

INSPECT PARKING BRAKE SWITCH

1. Turn the ignition switch OFF.

2. Disconnect the parking brake switch connector E35.

Brake ECU

Condition

Specified condition

Connector

Terminal

E60

29 – Ground

Ignition switch ON

10 to 16 V

JSFIA0373GB

Brake ECU

Condition

Specified condition

Connector

Terminal

E60

46 – Ground

Always

Below 1 

E61

90 – Ground

Always

Below 1 

JSFIA0374GB

Tester display

Measurement item / Range

Normal condition

PKB SW

Parking brake switch / ON or OFF

ON: Parking brake applied
OFF: Parking brake released

BRAKE WARNING LAMP REMAINS ON

BRC-179

< SYMPTOM DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

3. Measure the resistance according to the value(s) in the table

below.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace parking brake switch.

10.

CHECK HARNESS AND CONNECTOR

1. Disconnect the junction block, brake ECU, parking brake switch and combination meter connectors.

2. Measure the resistance according to the value(s) in the table

below.

Tester connection

Condition

Specified condition

1 – Ground

Parking brake switch ON

(Switch pin free)

Below 1 

1 – Ground

Parking brake switch OFF

(Switch pin pushed in)

10 k

Ω or higher

JSFIA0375GB

JSFIA0376GB

Junction block

Brake ECU

Condition

Specified condition

Connector

Terminal

Connector

Terminal

E48

54

E61

69

Always

Existed

BRC-180

< SYMPTOM DIAGNOSIS >

[VDC/TCS/ABS]

BRAKE WARNING LAMP REMAINS ON

NOTE:

If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table

and proceed to the next step before replacing the part.

Is the inspection result normal?

YES

>> Replace brake ECU.

NO

>> Repair or replace harness or connector.

11.

INSPECT COMBINATION METER ASSEMBLY

1. Turn the ignition switch OFF.

2. Perform “BRAKE WARN LAMP” of the combination meter (meter CPU) using the “ACTIVE TEST”.

NOTE:

• The brake warning lamp turns ON or OFF in accordance with the CONSULT-III.

• If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the

table and proceed to the next step before replacing the part.

Is the inspection result normal?

YES

>> Replace brake ECU.

NO

>> Replace parking brake switch.

Junction block

Parking brake switch

Condition

Specified condition

Connector

Terminal

Connector

Terminal

E48

53

E35

1

Always

Existed

Junction block

Combination meter

Condition

Specified condition

Connector

Terminal

Connector

Terminal

E48

41

M24

26

Always

Existed

 

 

 

 

 

 

 

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